|
General |
Name, Symbol, Number |
plutonium, Pu, 94 |
Chemical series |
actinides |
Group, Period, Block |
n/a, 7, f |
Appearance |
silvery white
|
Standard atomic weight |
(244) g·mol−1 |
Electron configuration |
[Rn] 5f6 7s2 |
Electrons per shell |
2, 8, 18, 32, 24, 8, 2 |
Physical properties |
Phase |
solid |
Density (near r.t.) |
19.816 g·cm−3 |
Liquid density at m.p. |
16.63 g·cm−3 |
Melting point |
912.5 K
(639.4 °C, 1182.9 °F) |
Boiling point |
3505 K
(3228 °C, 5842 °F) |
Heat of fusion |
2.82 kJ·mol−1 |
Heat of vaporization |
333.5 kJ·mol−1 |
Specific heat capacity |
(25 °C) 35.5 J·mol−1·K−1 |
Vapor pressure
P(Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
at T(K) |
1756 |
1953 |
2198 |
2511 |
2926 |
3499 |
|
Atomic properties |
Crystal structure |
monoclinic |
Oxidation states |
6, 5, 4, 3
(amphoteric oxide) |
Electronegativity |
1.28 (Pauling scale) |
Ionization energies |
1st: 584.7 kJ/mol |
Atomic radius |
175 pm |
Miscellaneous |
Magnetic ordering |
no data |
Electrical resistivity |
(0 °C) 1.460 µΩ·m |
Thermal conductivity |
(300 K) 6.74 W·m−1·K−1 |
Thermal expansion |
(25 °C) 46.7 µm·m−1·K−1 |
Speed of sound (thin rod) |
(20 °C) 2260 m/s |
Young's modulus |
96 GPa |
Shear modulus |
43 GPa |
Poisson ratio |
0.21 |
CAS registry number |
7440-07-5 |
Selected isotopes |
|
References |